/* 导航条的衣服 */
html{
	background: hsl(0, 6%, 78%);
    height: 100%;	
}
.nav{
    position: relative;
    top: 0;
    width: 100%;
    height: 80px;
    background-color:#f2f6f3f4;
}
.logo{
    margin-left: 0px;   /*可以根据实际情况自己来设置*/
    float: left;
}
a{
    text-decoration: none; 
}
.nav ul li{
    margin-left: 15px;
    height: 80px;
    list-style: none;
    line-height:80px;
    font-size: 20px;
    float: left;
}
.nav ul li a{
    display: block;
    padding:0 30px;
    color: rgb(69, 101, 199);
    size: 0ch;
}
.nav ul li a:hover{         /*鼠标滑过特效*/
    border-bottom: 2px solid seagreen;
    color: seagreen;
}